Saw-machine.



No. 660,715. Patented Oct. 30, I900.

J. WURSTER.

SAW MACHINE.

(Applicmiqn filed. Aug. 25, 1899. (No Model.) 3 Sheets-Sheet I.

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JULIUS WURSTER, OF DERENDINGEN, GERMANY.

SAW-MACHIN E.

SPECIFICATION forming part of Letters Patent N 0. 660,71 5, d t d October 30, 1 900.

Application filed August 25, 1899. berial No. 728,440. (No model.)

To all whom it may concern.-

Be it known thatl, JULIUS WURSTER, a subject of the King of Wiirtemberg, residing at Derendingen, near Tiibingen, Germany, have invented an Improved Sawing-Machine, of which the following is a specification.

This invention relates to a wood-sawing machine adapted to simultaneously out two or more logs of any cross-section. I provide the machine with angularly or difierently shaped guide-grooves, along which the logs are fed by means of blocks to the saws. Thus the machine may be employed for cutting round logs and also for cutting logs that have been flattened, the latter being supported by the blunted apexes of the tapering ribs by which the grooves are formed. Likewise the logs may be cut on one side, then reversed and cut on the other side. By placing suitable abutments into the grooves the logs may be cut at any desired angle or bevel.

In the accompanying drawings, Figure 1 is a front elevation of my improved sawing-machine; Fig. 2, a side elevation; Fig. 3, a plan; Figs. 4 and 5, vertical sections through the sawing-frame; and Figs. 6 and 7, cross-sections through the ribs b, showing the logs supported, respectively, within and between the grooves.

The letters A B represent the front and rear work-tables of the machine, communicating at their inner ends with the frame D, that carries the saw-blades d d, reciprocating between the tables. Upon the tables A B are formed longitudinal grooves or guideways a by means of upwardly-projecting parallel taperingribs I), having flattened apexes, the ribs of the front table A being in alinement with those of the rear table B. Round or untrimmed logs are placed into the grooves a, Fig. 6, while previously trimmed or flattened logs or beams are placed upon the apexes of ribs 1), Fig. 7. The logs are pushed forward toward the saw-blades by means of feed-blocks 0, connected to endless chains k, that run over sprocket-wheels 'n. One set of sprocket-wheels say under table Aser ves to actuate the chains and is keyed to its shaft 0. This shaft is rotated intermittently by a lever 9, having ratchet-jaws Z, that engage a friction-disk f, connected to toothed wheel 2, fast on shaft 0. Motion is transmitted from wheel 2. by wheel 2 or by an endless chain to one shaft of the sprocket-wheels under table 8, so that the chains under tables A B are moved in an opposite directioni. e., both with their upper run toward the saw-blades.

To prevent the logs from being raised out of their seats when the saw-blades move up ward, pressure-rollers t bear upon the logs at both sides of frame D. These rollers may be weighted in suitable manner, if desired.

Of course each pair of blades pertaining to the same guide-groove a may be reversed, when the motion of the log is of course correspondingly reversed.

What I claim is- A sawing-machine provided with a pair of spaced tables, an intervening frame, opp0- sitely set saws reciprocating within said frame, longitudinal ribs on the tables, a series of feed-blocks adapted to engage the logs, a separate endless chain to which the logs of each table are respectively connected, and means for driving said chains in opposite directions, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of two subscribing witnesses.

JULIUS WURSTER.

Witnesses LUDWIG KORNWELL, HERMAN WAGNER. 

